Abstract
In order to effectively reduce the hidden trouble of electric window on automobile, many cars now use the electric windows anti-pinch systems. It adds anti-pinch circuit based on the window control module. PIC18F258 micro controller samples and process the current of electric window motor. The method of combining current amplitude and current integral method is used to determine whether the window encounter obstacles, to achieve anti-pinch function. Through several experiments, it shows that the sensor-less anti-pinch system has good effects.
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